src/session.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *  Copyright (C) 2011  BWM CarIT GmbH. All rights reserved.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34 static GHashTable *session_hash;
  35 static connman_bool_t sessionmode;
  36 static struct session_info *ecall_info;
  37
  38 enum connman_session_trigger {
  39         CONNMAN_SESSION_TRIGGER_UNKNOWN         = 0,
  40         CONNMAN_SESSION_TRIGGER_SETTING         = 1,
  41         CONNMAN_SESSION_TRIGGER_CONNECT         = 2,
  42         CONNMAN_SESSION_TRIGGER_DISCONNECT      = 3,
  43         CONNMAN_SESSION_TRIGGER_PERIODIC        = 4,
  44         CONNMAN_SESSION_TRIGGER_SERVICE         = 5,
  45         CONNMAN_SESSION_TRIGGER_ECALL           = 6,
  46 };
  47
  48 enum connman_session_reason {
  49         CONNMAN_SESSION_REASON_UNKNOWN          = 0,
  50         CONNMAN_SESSION_REASON_CONNECT          = 1,
  51         CONNMAN_SESSION_REASON_DISCONNECT       = 2,
  52         CONNMAN_SESSION_REASON_FREE_RIDE        = 3,
  53         CONNMAN_SESSION_REASON_PERIODIC         = 4,
  54 };
  55
  56 enum connman_session_roaming_policy {
  57         CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN          = 0,
  58         CONNMAN_SESSION_ROAMING_POLICY_DEFAULT          = 1,
  59         CONNMAN_SESSION_ROAMING_POLICY_ALWAYS           = 2,
  60         CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN        = 3,
  61         CONNMAN_SESSION_ROAMING_POLICY_NATIONAL         = 4,
  62         CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL    = 5,
  63 };
  64
  65 struct service_entry {
  66         /* track why this service was selected */
  67         enum connman_session_reason reason;
  68         enum connman_service_state state;
  69         const char *name;
  70         struct connman_service *service;
  71         char *ifname;
  72         const char *bearer;
  73 };
  74
  75 struct session_info {
  76         connman_bool_t online;
  77         connman_bool_t priority;
  78         GSList *allowed_bearers;
  79         connman_bool_t avoid_handover;
  80         connman_bool_t stay_connected;
  81         unsigned int periodic_connect;
  82         unsigned int idle_timeout;
  83         connman_bool_t ecall;
  84         enum connman_session_roaming_policy roaming_policy;
  85         unsigned int marker;
  86
  87         struct service_entry *entry;
  88         enum connman_session_reason reason;
  89 };
  90
  91 struct connman_session {
  92         char *owner;
  93         char *session_path;
  94         char *notify_path;
  95         guint notify_watch;
  96
  97         connman_bool_t append_all;
  98         connman_bool_t info_dirty;
  99         struct session_info *info;
 100         struct session_info *info_last;
 101
 102         GSequence *service_list;
 103         GHashTable *service_hash;
 104 };
 105
 106 struct bearer_info {
 107         char *name;
 108         connman_bool_t match_all;
 109         enum connman_service_type service_type;
 110 };
 111
 112 static const char *trigger2string(enum connman_session_trigger trigger)
 113 {
 114         switch (trigger) {
 115         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 116                 break;
 117         case CONNMAN_SESSION_TRIGGER_SETTING:
 118                 return "setting";
 119         case CONNMAN_SESSION_TRIGGER_CONNECT:
 120                 return "connect";
 121         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
 122                 return "disconnect";
 123         case CONNMAN_SESSION_TRIGGER_PERIODIC:
 124                 return "periodic";
 125         case CONNMAN_SESSION_TRIGGER_SERVICE:
 126                 return "service";
 127         case CONNMAN_SESSION_TRIGGER_ECALL:
 128                 return "ecall";
 129         }
 130
 131         return NULL;
 132 }
 133
 134 static const char *reason2string(enum connman_session_reason reason)
 135 {
 136         switch (reason) {
 137         case CONNMAN_SESSION_REASON_UNKNOWN:
 138                 return "unknown";
 139         case CONNMAN_SESSION_REASON_CONNECT:
 140                 return "connect";
 141         case CONNMAN_SESSION_REASON_DISCONNECT:
 142                 return "disconnect";
 143         case CONNMAN_SESSION_REASON_FREE_RIDE:
 144                 return "free-ride";
 145         case CONNMAN_SESSION_REASON_PERIODIC:
 146                 return "periodic";
 147         }
 148
 149         return NULL;
 150 }
 151
 152 static const char *roamingpolicy2string(enum connman_session_roaming_policy policy)
 153 {
 154         switch (policy) {
 155         case CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN:
 156                 return "unknown";
 157         case CONNMAN_SESSION_ROAMING_POLICY_DEFAULT:
 158                 return "default";
 159         case CONNMAN_SESSION_ROAMING_POLICY_ALWAYS:
 160                 return "always";
 161         case CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN:
 162                 return "forbidden";
 163         case CONNMAN_SESSION_ROAMING_POLICY_NATIONAL:
 164                 return "national";
 165         case CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL:
 166                 return "international";
 167         }
 168
 169         return NULL;
 170 }
 171
 172 static enum connman_session_roaming_policy string2roamingpolicy(const char *policy)
 173 {
 174         if (g_strcmp0(policy, "default") == 0)
 175                 return CONNMAN_SESSION_ROAMING_POLICY_DEFAULT;
 176         else if (g_strcmp0(policy, "always") == 0)
 177                 return CONNMAN_SESSION_ROAMING_POLICY_ALWAYS;
 178         else if (g_strcmp0(policy, "forbidden") == 0)
 179                 return CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
 180         else if (g_strcmp0(policy, "national") == 0)
 181                 return CONNMAN_SESSION_ROAMING_POLICY_NATIONAL;
 182         else if (g_strcmp0(policy, "international") == 0)
 183                 return CONNMAN_SESSION_ROAMING_POLICY_INTERNATIONAL;
 184         else
 185                 return CONNMAN_SESSION_ROAMING_POLICY_UNKNOWN;
 186 }
 187
 188 static enum connman_service_type bearer2service(const char *bearer)
 189 {
 190         if (bearer == NULL)
 191                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 192
 193         if (g_strcmp0(bearer, "ethernet") == 0)
 194                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 195         else if (g_strcmp0(bearer, "wifi") == 0)
 196                 return CONNMAN_SERVICE_TYPE_WIFI;
 197         else if (g_strcmp0(bearer, "wimax") == 0)
 198                 return CONNMAN_SERVICE_TYPE_WIMAX;
 199         else if (g_strcmp0(bearer, "bluetooth") == 0)
 200                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
 201         else if (g_strcmp0(bearer, "cellular") == 0)
 202                 return CONNMAN_SERVICE_TYPE_CELLULAR;
 203         else if (g_strcmp0(bearer, "vpn") == 0)
 204                 return CONNMAN_SERVICE_TYPE_VPN;
 205         else
 206                 return CONNMAN_SERVICE_TYPE_UNKNOWN;
 207 }
 208
 209 static char *service2bearer(enum connman_service_type type)
 210 {
 211         switch (type) {
 212         case CONNMAN_SERVICE_TYPE_ETHERNET:
 213                 return "ethernet";
 214         case CONNMAN_SERVICE_TYPE_WIFI:
 215                 return "wifi";
 216         case CONNMAN_SERVICE_TYPE_WIMAX:
 217                 return "wimax";
 218         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 219                 return "bluetooth";
 220         case CONNMAN_SERVICE_TYPE_CELLULAR:
 221                 return "cellular";
 222         case CONNMAN_SERVICE_TYPE_VPN:
 223                 return "vpn";
 224         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 225         case CONNMAN_SERVICE_TYPE_SYSTEM:
 226         case CONNMAN_SERVICE_TYPE_GPS:
 227         case CONNMAN_SERVICE_TYPE_GADGET:
 228                 return "";
 229         }
 230
 231         return "";
 232 }
 233
 234 static void cleanup_bearer_info(gpointer data, gpointer user_data)
 235 {
 236         struct bearer_info *info = data;
 237
 238         g_free(info->name);
 239         g_free(info);
 240 }
 241
 242 static GSList *session_parse_allowed_bearers(DBusMessageIter *iter)
 243 {
 244         struct bearer_info *info;
 245         DBusMessageIter array;
 246         GSList *list = NULL;
 247
 248         dbus_message_iter_recurse(iter, &array);
 249
 250         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_STRING) {
 251                 char *bearer = NULL;
 252
 253                 dbus_message_iter_get_basic(&array, &bearer);
 254
 255                 info = g_try_new0(struct bearer_info, 1);
 256                 if (info == NULL) {
 257                         g_slist_foreach(list, cleanup_bearer_info, NULL);
 258                         g_slist_free(list);
 259
 260                         return NULL;
 261                 }
 262
 263                 info->name = g_strdup(bearer);
 264                 info->service_type = bearer2service(info->name);
 265
 266                 if (info->service_type == CONNMAN_SERVICE_TYPE_UNKNOWN &&
 267                                 g_strcmp0(info->name, "*") == 0) {
 268                         info->match_all = TRUE;
 269                 } else {
 270                         info->match_all = FALSE;
 271                 }
 272
 273                 list = g_slist_append(list, info);
 274
 275                 dbus_message_iter_next(&array);
 276         }
 277
 278         return list;
 279 }
 280
 281 static GSList *session_allowed_bearers_any(void)
 282 {
 283         struct bearer_info *info;
 284         GSList *list = NULL;
 285
 286         info = g_try_new0(struct bearer_info, 1);
 287         if (info == NULL) {
 288                 g_slist_free(list);
 289
 290                 return NULL;
 291         }
 292
 293         info->name = g_strdup("");
 294         info->match_all = TRUE;
 295         info->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
 296
 297         list = g_slist_append(list, info);
 298
 299         return list;
 300 }
 301
 302 static void append_allowed_bearers(DBusMessageIter *iter, void *user_data)
 303 {
 304         struct session_info *info = user_data;
 305         GSList *list;
 306
 307         for (list = info->allowed_bearers;
 308                         list != NULL; list = list->next) {
 309                 struct bearer_info *info = list->data;
 310
 311                 dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
 312                                                 &info->name);
 313         }
 314 }
 315
 316 static void append_ipconfig_ipv4(DBusMessageIter *iter, void *user_data)
 317 {
 318         struct connman_service *service = user_data;
 319         struct connman_ipconfig *ipconfig_ipv4;
 320
 321         if (service == NULL)
 322                 return;
 323
 324         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 325         if (ipconfig_ipv4 == NULL)
 326                 return;
 327
 328         __connman_ipconfig_append_ipv4(ipconfig_ipv4, iter);
 329 }
 330
 331 static void append_ipconfig_ipv6(DBusMessageIter *iter, void *user_data)
 332 {
 333         struct connman_service *service = user_data;
 334         struct connman_ipconfig *ipconfig_ipv4, *ipconfig_ipv6;
 335
 336         if (service == NULL)
 337                 return;
 338
 339         ipconfig_ipv4 = __connman_service_get_ip4config(service);
 340         ipconfig_ipv6 = __connman_service_get_ip6config(service);
 341         if (ipconfig_ipv6 == NULL)
 342                 return;
 343
 344         __connman_ipconfig_append_ipv6(ipconfig_ipv6, iter, ipconfig_ipv4);
 345 }
 346
 347 static void append_notify(DBusMessageIter *dict,
 348                                         struct connman_session *session)
 349 {
 350         struct session_info *info = session->info;
 351         struct session_info *info_last = session->info_last;
 352         const char *policy;
 353         struct connman_service *service;
 354         const char *name, *ifname, *bearer;
 355
 356         if (session->append_all == TRUE ||
 357                         info->online != info_last->online) {
 358                 connman_dbus_dict_append_basic(dict, "Online",
 359                                                 DBUS_TYPE_BOOLEAN,
 360                                                 &info->online);
 361                 info_last->online = info->online;
 362         }
 363
 364         if (session->append_all == TRUE ||
 365                         info->entry != info_last->entry) {
 366                 if (info->entry == NULL) {
 367                         name = "";
 368                         ifname = "";
 369                         service = NULL;
 370                         bearer = "";
 371                 } else {
 372                         name = info->entry->name;
 373                         ifname = info->entry->ifname;
 374                         service = info->entry->service;
 375                         bearer = info->entry->bearer;
 376                 }
 377
 378                 connman_dbus_dict_append_basic(dict, "Name",
 379                                                 DBUS_TYPE_STRING,
 380                                                 &name);
 381
 382                 connman_dbus_dict_append_dict(dict, "IPv4",
 383                                                 append_ipconfig_ipv4,
 384                                                 service);
 385
 386                 connman_dbus_dict_append_dict(dict, "IPv6",
 387                                                 append_ipconfig_ipv6,
 388                                                 service);
 389
 390                 connman_dbus_dict_append_basic(dict, "Interface",
 391                                                 DBUS_TYPE_STRING,
 392                                                 &ifname);
 393
 394                 connman_dbus_dict_append_basic(dict, "Bearer",
 395                                                 DBUS_TYPE_STRING,
 396                                                 &bearer);
 397
 398                 info_last->entry = info->entry;
 399         }
 400
 401
 402         if (session->append_all == TRUE ||
 403                         info->priority != info_last->priority) {
 404                 connman_dbus_dict_append_basic(dict, "Priority",
 405                                                 DBUS_TYPE_BOOLEAN,
 406                                                 &info->priority);
 407                 info_last->priority = info->priority;
 408         }
 409
 410         if (session->append_all == TRUE ||
 411                         info->allowed_bearers != info_last->allowed_bearers) {
 412                 connman_dbus_dict_append_array(dict, "AllowedBearers",
 413                                                 DBUS_TYPE_STRING,
 414                                                 append_allowed_bearers,
 415                                                 info);
 416                 info_last->allowed_bearers = info->allowed_bearers;
 417         }
 418
 419         if (session->append_all == TRUE ||
 420                         info->avoid_handover != info_last->avoid_handover) {
 421                 connman_dbus_dict_append_basic(dict, "AvoidHandover",
 422                                                 DBUS_TYPE_BOOLEAN,
 423                                                 &info->avoid_handover);
 424                 info_last->avoid_handover = info->avoid_handover;
 425         }
 426
 427         if (session->append_all == TRUE ||
 428                         info->stay_connected != info_last->stay_connected) {
 429                 connman_dbus_dict_append_basic(dict, "StayConnected",
 430                                                 DBUS_TYPE_BOOLEAN,
 431                                                 &info->stay_connected);
 432                 info_last->stay_connected = info->stay_connected;
 433         }
 434
 435         if (session->append_all == TRUE ||
 436                         info->periodic_connect != info_last->periodic_connect) {
 437                 connman_dbus_dict_append_basic(dict, "PeriodicConnect",
 438                                                 DBUS_TYPE_UINT32,
 439                                                 &info->periodic_connect);
 440                 info_last->periodic_connect = info->periodic_connect;
 441         }
 442
 443         if (session->append_all == TRUE ||
 444                         info->idle_timeout != info_last->idle_timeout) {
 445                 connman_dbus_dict_append_basic(dict, "IdleTimeout",
 446                                                 DBUS_TYPE_UINT32,
 447                                                 &info->idle_timeout);
 448                 info_last->idle_timeout = info->idle_timeout;
 449         }
 450
 451         if (session->append_all == TRUE ||
 452                         info->ecall != info_last->ecall) {
 453                 connman_dbus_dict_append_basic(dict, "EmergencyCall",
 454                                                 DBUS_TYPE_BOOLEAN,
 455                                                 &info->ecall);
 456                 info_last->ecall = info->ecall;
 457         }
 458
 459         if (session->append_all == TRUE ||
 460                         info->roaming_policy != info_last->roaming_policy) {
 461                 policy = roamingpolicy2string(info->roaming_policy);
 462                 connman_dbus_dict_append_basic(dict, "RoamingPolicy",
 463                                                 DBUS_TYPE_STRING,
 464                                                 &policy);
 465                 info_last->roaming_policy = info->roaming_policy;
 466         }
 467
 468         if (session->append_all == TRUE ||
 469                         info->marker != info_last->marker) {
 470                 connman_dbus_dict_append_basic(dict, "SessionMarker",
 471                                                 DBUS_TYPE_UINT32,
 472                                                 &info->marker);
 473                 info_last->marker = info->marker;
 474         }
 475
 476         session->append_all = FALSE;
 477         session->info_dirty = FALSE;
 478 }
 479
 480 static gboolean session_notify(gpointer user_data)
 481 {
 482         struct connman_session *session = user_data;
 483         DBusMessage *msg;
 484         DBusMessageIter array, dict;
 485
 486         if (session->info_dirty == FALSE)
 487                 return 0;
 488
 489         DBG("session %p owner %s notify_path %s", session,
 490                 session->owner, session->notify_path);
 491
 492         msg = dbus_message_new_method_call(session->owner, session->notify_path,
 493                                                 CONNMAN_NOTIFICATION_INTERFACE,
 494                                                 "Update");
 495         if (msg == NULL)
 496                 return FALSE;
 497
 498         dbus_message_iter_init_append(msg, &array);
 499         connman_dbus_dict_open(&array, &dict);
 500
 501         append_notify(&dict, session);
 502
 503         connman_dbus_dict_close(&array, &dict);
 504
 505         g_dbus_send_message(connection, msg);
 506
 507         return FALSE;
 508 }
 509
 510 static void ipconfig_ipv4_changed(struct connman_session *session)
 511 {
 512         struct session_info *info = session->info;
 513
 514         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 515                                                 "IPv4", append_ipconfig_ipv4,
 516                                                 info->entry->service);
 517 }
 518
 519 static void ipconfig_ipv6_changed(struct connman_session *session)
 520 {
 521         struct session_info *info = session->info;
 522
 523         connman_dbus_setting_changed_dict(session->owner, session->notify_path,
 524                                                 "IPv6", append_ipconfig_ipv6,
 525                                                 info->entry->service);
 526 }
 527
 528 static connman_bool_t service_type_match(struct connman_session *session,
 529                                         struct connman_service *service)
 530 {
 531         struct session_info *info = session->info;
 532         GSList *list;
 533
 534         for (list = info->allowed_bearers;
 535                         list != NULL; list = list->next) {
 536                 struct bearer_info *info = list->data;
 537                 enum connman_service_type service_type;
 538
 539                 if (info->match_all == TRUE)
 540                         return TRUE;
 541
 542                 service_type = connman_service_get_type(service);
 543                 if (info->service_type == service_type)
 544                         return TRUE;
 545         }
 546
 547         return FALSE;
 548 }
 549
 550 static connman_bool_t service_match(struct connman_session *session,
 551                                         struct connman_service *service)
 552 {
 553         if (service_type_match(session, service) == FALSE)
 554                 return FALSE;
 555
 556         return TRUE;
 557 }
 558
 559 static int service_type_weight(enum connman_service_type type)
 560 {
 561         /*
 562          * The session doesn't care which service
 563          * to use. Nevertheless we have to sort them
 564          * according their type. The ordering is
 565          *
 566          * 1. Ethernet
 567          * 2. Bluetooth
 568          * 3. WiFi/WiMAX
 569          * 4. Cellular
 570          */
 571
 572         switch (type) {
 573         case CONNMAN_SERVICE_TYPE_ETHERNET:
 574                 return 4;
 575         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 576                 return 3;
 577         case CONNMAN_SERVICE_TYPE_WIFI:
 578         case CONNMAN_SERVICE_TYPE_WIMAX:
 579                 return 2;
 580         case CONNMAN_SERVICE_TYPE_CELLULAR:
 581                 return 1;
 582         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 583         case CONNMAN_SERVICE_TYPE_SYSTEM:
 584         case CONNMAN_SERVICE_TYPE_GPS:
 585         case CONNMAN_SERVICE_TYPE_VPN:
 586         case CONNMAN_SERVICE_TYPE_GADGET:
 587                 break;
 588         }
 589
 590         return 0;
 591 }
 592
 593 static gint sort_allowed_bearers(struct connman_service *service_a,
 594                                         struct connman_service *service_b,
 595                                         struct connman_session *session)
 596 {
 597         struct session_info *info = session->info;
 598         GSList *list;
 599         enum connman_service_type type_a, type_b;
 600         int weight_a, weight_b;
 601
 602         type_a = connman_service_get_type(service_a);
 603         type_b = connman_service_get_type(service_b);
 604
 605         for (list = info->allowed_bearers;
 606                         list != NULL; list = list->next) {
 607                 struct bearer_info *info = list->data;
 608
 609                 if (info->match_all == TRUE) {
 610                         if (type_a != type_b) {
 611                                 weight_a = service_type_weight(type_a);
 612                                 weight_b = service_type_weight(type_b);
 613
 614                                 if (weight_a > weight_b)
 615                                         return -1;
 616
 617                                 if (weight_a < weight_b)
 618                                         return 1;
 619
 620                                 return 0;
 621                         }
 622                 }
 623
 624                 if (type_a == info->service_type &&
 625                                 type_b == info->service_type) {
 626                         return 0;
 627                 }
 628
 629                 if (type_a == info->service_type &&
 630                                 type_b != info->service_type) {
 631                         return -1;
 632                 }
 633
 634                 if (type_a != info->service_type &&
 635                                 type_b == info->service_type) {
 636                         return 1;
 637                 }
 638         }
 639
 640         return 0;
 641 }
 642
 643 static gint sort_services(gconstpointer a, gconstpointer b, gpointer user_data)
 644 {
 645         struct service_entry *entry_a = (void *)a;
 646         struct service_entry *entry_b = (void *)b;
 647         struct connman_session *session = user_data;
 648
 649         return sort_allowed_bearers(entry_a->service, entry_b->service,
 650                                 session);
 651 }
 652
 653 static void cleanup_session(gpointer user_data)
 654 {
 655         struct connman_session *session = user_data;
 656         struct session_info *info = session->info;
 657
 658         DBG("remove %s", session->session_path);
 659
 660         g_hash_table_destroy(session->service_hash);
 661         g_sequence_free(session->service_list);
 662
 663         if (info->entry != NULL &&
 664                         info->entry->reason == CONNMAN_SESSION_REASON_CONNECT) {
 665                 __connman_service_disconnect(info->entry->service);
 666         }
 667
 668         g_slist_foreach(info->allowed_bearers, cleanup_bearer_info, NULL);
 669         g_slist_free(info->allowed_bearers);
 670
 671         g_free(session->owner);
 672         g_free(session->session_path);
 673         g_free(session->notify_path);
 674         g_free(session->info);
 675         g_free(session->info_last);
 676
 677         g_free(session);
 678 }
 679
 680 static connman_bool_t is_online(enum connman_service_state state)
 681 {
 682         switch (state) {
 683         case CONNMAN_SERVICE_STATE_UNKNOWN:
 684         case CONNMAN_SERVICE_STATE_IDLE:
 685         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 686         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 687         case CONNMAN_SERVICE_STATE_DISCONNECT:
 688         case CONNMAN_SERVICE_STATE_FAILURE:
 689         case CONNMAN_SERVICE_STATE_READY:
 690                 break;
 691         case CONNMAN_SERVICE_STATE_ONLINE:
 692                 return TRUE;
 693         }
 694
 695         return FALSE;
 696 }
 697
 698 static connman_bool_t is_connecting(enum connman_service_state state)
 699 {
 700         switch (state) {
 701         case CONNMAN_SERVICE_STATE_UNKNOWN:
 702         case CONNMAN_SERVICE_STATE_IDLE:
 703                 break;
 704         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 705         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 706         case CONNMAN_SERVICE_STATE_READY:
 707                 return TRUE;
 708         case CONNMAN_SERVICE_STATE_DISCONNECT:
 709         case CONNMAN_SERVICE_STATE_FAILURE:
 710         case CONNMAN_SERVICE_STATE_ONLINE:
 711                 break;
 712         }
 713
 714         return FALSE;
 715 }
 716
 717 static connman_bool_t explicit_connect(enum connman_session_reason reason)
 718 {
 719         switch (reason) {
 720         case CONNMAN_SESSION_REASON_UNKNOWN:
 721         case CONNMAN_SESSION_REASON_FREE_RIDE:
 722         case CONNMAN_SESSION_REASON_DISCONNECT:
 723                 break;
 724         case CONNMAN_SESSION_REASON_CONNECT:
 725         case CONNMAN_SESSION_REASON_PERIODIC:
 726                 return TRUE;
 727         }
 728
 729         return FALSE;
 730 }
 731
 732 static connman_bool_t explicit_disconnect(struct session_info *info)
 733 {
 734         if (info->entry == NULL)
 735                 return FALSE;
 736
 737         DBG("reason %s service %p state %d",
 738                 reason2string(info->entry->reason),
 739                 info->entry->service, info->entry->state);
 740
 741         if (info->entry->reason == CONNMAN_SESSION_REASON_UNKNOWN)
 742                 return FALSE;
 743
 744         if (explicit_connect(info->entry->reason) == FALSE)
 745                 return FALSE;
 746
 747         if (__connman_service_session_dec(info->entry->service) == FALSE)
 748                 return FALSE;
 749
 750         if (ecall_info != NULL && ecall_info != info)
 751                 return FALSE;
 752
 753         return TRUE;
 754 }
 755
 756 static gboolean call_disconnect(gpointer user_data)
 757 {
 758         struct connman_service *service = user_data;
 759
 760         /*
 761          * TODO: We should mark this entry as pending work. In case
 762          * disconnect fails we just unassign this session from the
 763          * service and can't do anything later on it
 764          */
 765         DBG("disconnect service %p", service);
 766         __connman_service_disconnect(service);
 767
 768         return FALSE;
 769 }
 770
 771 static gboolean call_connect(gpointer user_data)
 772 {
 773         struct connman_service *service = user_data;
 774
 775         DBG("connect service %p", service);
 776         __connman_service_connect(service);
 777
 778         return FALSE;
 779 }
 780
 781 static void deselect_service(struct session_info *info)
 782 {
 783         struct connman_service *service;
 784         connman_bool_t disconnect, online;
 785
 786         DBG("");
 787
 788         if (info->entry == NULL)
 789                 return;
 790
 791         disconnect = explicit_disconnect(info);
 792
 793         online = is_connecting(info->entry->state) == TRUE ||
 794                         is_online(info->entry->state) == TRUE;
 795
 796         info->online = FALSE;
 797         info->entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 798
 799         service = info->entry->service;
 800         info->entry = NULL;
 801
 802         DBG("disconnect %d online %d", disconnect, online);
 803
 804         if (disconnect == TRUE && online == TRUE)
 805                 g_timeout_add_seconds(0, call_disconnect, service);
 806 }
 807
 808 static void deselect_and_disconnect(struct connman_session *session,
 809                                         enum connman_session_reason reason)
 810 {
 811         struct session_info *info = session->info;
 812
 813         deselect_service(info);
 814
 815         info->reason = reason;
 816 }
 817
 818 static void select_online_service(struct session_info *info,
 819                                         struct service_entry *entry)
 820 {
 821         info->online = TRUE;
 822
 823         info->entry = entry;
 824         info->entry->reason = info->reason;
 825
 826         if (explicit_connect(info->reason) == FALSE)
 827                 return;
 828
 829         __connman_service_session_inc(info->entry->service);
 830 }
 831
 832 static void select_offline_service(struct session_info *info,
 833                                         struct service_entry *entry)
 834 {
 835         if (explicit_connect(info->reason) == FALSE)
 836                 return;
 837
 838         info->online = FALSE;
 839
 840         info->entry = entry;
 841         info->entry->reason = info->reason;
 842
 843         __connman_service_session_inc(info->entry->service);
 844         g_timeout_add_seconds(0, call_connect, info->entry->service);
 845 }
 846
 847 static void select_service(struct session_info *info,
 848                                 struct service_entry *entry)
 849 {
 850         DBG("service %p", entry->service);
 851
 852         if (is_online(entry->state) == TRUE)
 853                 select_online_service(info, entry);
 854         else
 855                 select_offline_service(info, entry);
 856 }
 857
 858 static void select_and_connect(struct connman_session *session,
 859                                 enum connman_session_reason reason)
 860 {
 861         struct session_info *info = session->info;
 862         struct service_entry *entry = NULL;
 863         GSequenceIter *iter;
 864
 865         DBG("session %p reason %s", session, reason2string(reason));
 866
 867         info->reason = reason;
 868
 869         iter = g_sequence_get_begin_iter(session->service_list);
 870
 871         while (g_sequence_iter_is_end(iter) == FALSE) {
 872                 entry = g_sequence_get(iter);
 873
 874                 switch (entry->state) {
 875                 case CONNMAN_SERVICE_STATE_ASSOCIATION:
 876                 case CONNMAN_SERVICE_STATE_CONFIGURATION:
 877                 case CONNMAN_SERVICE_STATE_READY:
 878                 case CONNMAN_SERVICE_STATE_ONLINE:
 879                 case CONNMAN_SERVICE_STATE_IDLE:
 880                 case CONNMAN_SERVICE_STATE_DISCONNECT:
 881                         select_service(info, entry);
 882                         return;
 883                 case CONNMAN_SERVICE_STATE_UNKNOWN:
 884                 case CONNMAN_SERVICE_STATE_FAILURE:
 885                         break;
 886                 }
 887
 888                 iter = g_sequence_iter_next(iter);
 889         }
 890 }
 891
 892 static struct service_entry *create_service_entry(struct connman_service *service,
 893                                         const char *name,
 894                                         enum connman_service_state state)
 895 {
 896         struct service_entry *entry;
 897         enum connman_service_type type;
 898         int idx;
 899
 900         entry = g_try_new0(struct service_entry, 1);
 901         if (entry == NULL)
 902                 return entry;
 903
 904         entry->reason = CONNMAN_SESSION_REASON_UNKNOWN;
 905         entry->state = state;
 906         if (name != NULL)
 907                 entry->name = name;
 908         else
 909                 entry->name = "";
 910         entry->service = service;
 911
 912         idx = __connman_service_get_index(entry->service);
 913         entry->ifname = connman_inet_ifname(idx);
 914         if (entry->ifname == NULL)
 915                 entry->ifname = g_strdup("");
 916
 917         type = connman_service_get_type(entry->service);
 918         entry->bearer = service2bearer(type);
 919
 920         return entry;
 921 }
 922
 923 static void destroy_service_entry(gpointer data)
 924 {
 925         struct service_entry *entry = data;
 926
 927         g_free(entry->ifname);
 928
 929         g_free(entry);
 930 }
 931
 932 static void populate_service_list(struct connman_session *session)
 933 {
 934         struct service_entry *entry;
 935         GSequenceIter *iter;
 936
 937         session->service_hash =
 938                 g_hash_table_new_full(g_direct_hash, g_direct_equal,
 939                                         NULL, NULL);
 940         session->service_list = __connman_service_get_list(session,
 941                                                         service_match,
 942                                                         create_service_entry,
 943                                                         destroy_service_entry);
 944
 945         g_sequence_sort(session->service_list, sort_services, session);
 946
 947         iter = g_sequence_get_begin_iter(session->service_list);
 948
 949         while (g_sequence_iter_is_end(iter) == FALSE) {
 950                 entry = g_sequence_get(iter);
 951
 952                 DBG("service %p type %s name %s", entry->service,
 953                         service2bearer(connman_service_get_type(entry->service)),
 954                         entry->name);
 955
 956                 g_hash_table_replace(session->service_hash,
 957                                         entry->service, iter);
 958
 959                 iter = g_sequence_iter_next(iter);
 960         }
 961 }
 962
 963 static void session_changed(struct connman_session *session,
 964                                 enum connman_session_trigger trigger)
 965 {
 966         struct session_info *info = session->info;
 967         struct session_info *info_last = session->info_last;
 968         GSequenceIter *service_iter = NULL, *service_iter_last = NULL;
 969         GSequence *service_list_last;
 970         GHashTable *service_hash_last;
 971
 972         /*
 973          * TODO: This only a placeholder for the 'real' algorithm to
 974          * play a bit around. So we are going to improve it step by step.
 975          */
 976
 977         DBG("session %p trigger %s reason %s", session, trigger2string(trigger),
 978                                                 reason2string(info->reason));
 979
 980         if (info->entry != NULL) {
 981                 info->online = is_online(info->entry->state);
 982                 if (info_last->online != info->online)
 983                         session->info_dirty = TRUE;
 984         }
 985
 986         switch (trigger) {
 987         case CONNMAN_SESSION_TRIGGER_UNKNOWN:
 988                 DBG("ignore session changed event");
 989                 return;
 990         case CONNMAN_SESSION_TRIGGER_SETTING:
 991                 if (info->allowed_bearers != info_last->allowed_bearers) {
 992
 993                         service_hash_last = session->service_hash;
 994                         service_list_last = session->service_list;
 995
 996                         populate_service_list(session);
 997
 998                         if (info->entry != NULL) {
 999                                 service_iter_last = g_hash_table_lookup(
1000                                                         service_hash_last,
1001                                                         info->entry->service);
1002                                 service_iter = g_hash_table_lookup(
1003                                                         session->service_hash,
1004                                                         info->entry->service);
1005                         }
1006
1007                         if (service_iter == NULL && service_iter_last != NULL) {
1008                                 /*
1009                                  * The currently selected service is
1010                                  * not part of this session anymore.
1011                                  */
1012                                 deselect_and_disconnect(session, info->reason);
1013                         }
1014
1015                         g_hash_table_remove_all(service_hash_last);
1016                         g_sequence_free(service_list_last);
1017                 }
1018
1019                 if (info->online == FALSE) {
1020                         select_and_connect(session,
1021                                         CONNMAN_SESSION_REASON_FREE_RIDE);
1022                 }
1023
1024                 break;
1025         case CONNMAN_SESSION_TRIGGER_CONNECT:
1026                 if (info->online == TRUE) {
1027                         if (info->entry->reason == CONNMAN_SESSION_REASON_CONNECT)
1028                                 break;
1029                         info->entry->reason = CONNMAN_SESSION_REASON_CONNECT;
1030                         __connman_service_session_inc(info->entry->service);
1031                         break;
1032                 }
1033
1034                 select_and_connect(session,
1035                                 CONNMAN_SESSION_REASON_CONNECT);
1036
1037                 break;
1038         case CONNMAN_SESSION_TRIGGER_DISCONNECT:
1039                 deselect_and_disconnect(session,
1040                                         CONNMAN_SESSION_REASON_DISCONNECT);
1041
1042                 break;
1043         case CONNMAN_SESSION_TRIGGER_PERIODIC:
1044                 if (info->online == TRUE) {
1045                         info->entry->reason = CONNMAN_SESSION_REASON_PERIODIC;
1046                         __connman_service_session_inc(info->entry->service);
1047                         break;
1048                 }
1049
1050                 select_and_connect(session,
1051                                 CONNMAN_SESSION_REASON_PERIODIC);
1052
1053                 break;
1054         case CONNMAN_SESSION_TRIGGER_SERVICE:
1055                 if (info->entry != NULL &&
1056                                 (is_connecting(info->entry->state) == TRUE ||
1057                                         is_online(info->entry->state) == TRUE)) {
1058                         break;
1059                 }
1060
1061                 deselect_and_disconnect(session, info->reason);
1062
1063                 if (info->reason == CONNMAN_SESSION_REASON_FREE_RIDE ||
1064                                 info->stay_connected == TRUE) {
1065                         select_and_connect(session, info->reason);
1066                 }
1067
1068                 break;
1069         case CONNMAN_SESSION_TRIGGER_ECALL:
1070                 if (info->online == FALSE && info->entry != NULL &&
1071                                 info->entry->service != NULL) {
1072                         deselect_and_disconnect(session, info->reason);
1073                 }
1074
1075                 break;
1076         }
1077
1078         if (info->entry != info_last->entry)
1079                 session->info_dirty = TRUE;
1080
1081         session_notify(session);
1082 }
1083
1084 static DBusMessage *connect_session(DBusConnection *conn,
1085                                         DBusMessage *msg, void *user_data)
1086 {
1087         struct connman_session *session = user_data;
1088         struct session_info *info = session->info;
1089
1090         DBG("session %p", session);
1091
1092         if (ecall_info != NULL && ecall_info != info)
1093                 return __connman_error_failed(msg, EBUSY);
1094
1095         session_changed(session, CONNMAN_SESSION_TRIGGER_CONNECT);
1096
1097         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1098 }
1099
1100 static DBusMessage *disconnect_session(DBusConnection *conn,
1101                                         DBusMessage *msg, void *user_data)
1102 {
1103         struct connman_session *session = user_data;
1104         struct session_info *info = session->info;
1105
1106         DBG("session %p", session);
1107
1108         if (ecall_info != NULL && ecall_info != info)
1109                 return __connman_error_failed(msg, EBUSY);
1110
1111         session_changed(session, CONNMAN_SESSION_TRIGGER_DISCONNECT);
1112
1113         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1114 }
1115
1116 static void update_ecall_sessions(struct connman_session *session)
1117 {
1118         struct session_info *info = session->info;
1119         struct connman_session *session_iter;
1120         GHashTableIter iter;
1121         gpointer key, value;
1122
1123         g_hash_table_iter_init(&iter, session_hash);
1124
1125         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1126                 session_iter = value;
1127
1128                 if (session_iter == session)
1129                         continue;
1130
1131                 session_iter->info->ecall = info->ecall;
1132                 session_iter->info_dirty = TRUE;
1133
1134                 session_changed(session_iter, CONNMAN_SESSION_TRIGGER_ECALL);
1135         }
1136 }
1137
1138 static void update_ecall(struct connman_session *session)
1139 {
1140         struct session_info *info = session->info;
1141         struct session_info *info_last = session->info_last;
1142
1143         DBG("session %p ecall_info %p ecall %d -> %d", session,
1144                 ecall_info, info_last->ecall, info->ecall);
1145
1146         if (ecall_info == NULL) {
1147                 if (!(info_last->ecall == FALSE && info->ecall == TRUE))
1148                         goto err;
1149
1150                 ecall_info = info;
1151         } else if (ecall_info == info) {
1152                 if (!(info_last->ecall == TRUE && info->ecall == FALSE))
1153                         goto err;
1154
1155                 ecall_info = NULL;
1156         } else {
1157                 goto err;
1158         }
1159
1160         update_ecall_sessions(session);
1161
1162         session->info_dirty = TRUE;
1163         return;
1164
1165 err:
1166         /* not a valid transition */
1167         info->ecall = info_last->ecall;
1168 }
1169
1170 static DBusMessage *change_session(DBusConnection *conn,
1171                                         DBusMessage *msg, void *user_data)
1172 {
1173         struct connman_session *session = user_data;
1174         struct session_info *info = session->info;
1175         struct session_info *info_last = session->info_last;
1176         DBusMessageIter iter, value;
1177         const char *name;
1178         GSList *allowed_bearers;
1179
1180         DBG("session %p", session);
1181         if (dbus_message_iter_init(msg, &iter) == FALSE)
1182                 return __connman_error_invalid_arguments(msg);
1183
1184         dbus_message_iter_get_basic(&iter, &name);
1185         dbus_message_iter_next(&iter);
1186         dbus_message_iter_recurse(&iter, &value);
1187
1188         switch (dbus_message_iter_get_arg_type(&value)) {
1189         case DBUS_TYPE_ARRAY:
1190                 if (g_str_equal(name, "AllowedBearers") == TRUE) {
1191                         allowed_bearers = session_parse_allowed_bearers(&value);
1192
1193                         g_slist_foreach(info->allowed_bearers,
1194                                         cleanup_bearer_info, NULL);
1195                         g_slist_free(info->allowed_bearers);
1196
1197                         if (allowed_bearers == NULL) {
1198                                 allowed_bearers = session_allowed_bearers_any();
1199
1200                                 if (allowed_bearers == NULL)
1201                                         return __connman_error_failed(msg, ENOMEM);
1202                         }
1203
1204                         info->allowed_bearers = allowed_bearers;
1205
1206                         session->info_dirty = TRUE;
1207                 } else {
1208                         goto err;
1209                 }
1210                 break;
1211         case DBUS_TYPE_BOOLEAN:
1212                 if (g_str_equal(name, "Priority") == TRUE) {
1213                         dbus_message_iter_get_basic(&value,
1214                                         &info->priority);
1215
1216                         if (info_last->priority != info->priority)
1217                                 session->info_dirty = TRUE;
1218                 } else if (g_str_equal(name, "AvoidHandover") == TRUE) {
1219                         dbus_message_iter_get_basic(&value,
1220                                         &info->avoid_handover);
1221
1222                         if (info_last->avoid_handover != info->avoid_handover)
1223                                 session->info_dirty = TRUE;
1224                 } else if (g_str_equal(name, "StayConnected") == TRUE) {
1225                         dbus_message_iter_get_basic(&value,
1226                                         &info->stay_connected);
1227
1228                         if (info_last->stay_connected != info->stay_connected)
1229                                 session->info_dirty = TRUE;
1230                 } else if (g_str_equal(name, "EmergencyCall") == TRUE) {
1231                         dbus_message_iter_get_basic(&value,
1232                                         &info->ecall);
1233
1234                         update_ecall(session);
1235                 } else {
1236                         goto err;
1237                 }
1238                 break;
1239         case DBUS_TYPE_UINT32:
1240                 if (g_str_equal(name, "PeriodicConnect") == TRUE) {
1241                         dbus_message_iter_get_basic(&value,
1242                                         &info->periodic_connect);
1243
1244                         if (info_last->periodic_connect != info->periodic_connect)
1245                                 session->info_dirty = TRUE;
1246                 } else if (g_str_equal(name, "IdleTimeout") == TRUE) {
1247                         dbus_message_iter_get_basic(&value,
1248                                         &info->idle_timeout);
1249
1250                         if (info_last->idle_timeout != info->idle_timeout)
1251                                 session->info_dirty = TRUE;
1252                 } else {
1253                         goto err;
1254                 }
1255                 break;
1256         case DBUS_TYPE_STRING:
1257                 if (g_str_equal(name, "RoamingPolicy") == TRUE) {
1258                         const char *val;
1259                         dbus_message_iter_get_basic(&value, &val);
1260                         info->roaming_policy =
1261                                         string2roamingpolicy(val);
1262
1263                         if (info_last->roaming_policy != info->roaming_policy)
1264                                 session->info_dirty = TRUE;
1265                 } else {
1266                         goto err;
1267                 }
1268                 break;
1269         default:
1270                 goto err;
1271         }
1272
1273         if (session->info_dirty == TRUE)
1274                 session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1275
1276         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1277
1278 err:
1279         return __connman_error_invalid_arguments(msg);
1280 }
1281
1282 static void release_session(gpointer key, gpointer value, gpointer user_data)
1283 {
1284         struct connman_session *session = value;
1285         DBusMessage *message;
1286
1287         DBG("owner %s path %s", session->owner, session->notify_path);
1288
1289         if (session->notify_watch > 0)
1290                 g_dbus_remove_watch(connection, session->notify_watch);
1291
1292         g_dbus_unregister_interface(connection, session->session_path,
1293                                                 CONNMAN_SESSION_INTERFACE);
1294
1295         message = dbus_message_new_method_call(session->owner,
1296                                                 session->notify_path,
1297                                                 CONNMAN_NOTIFICATION_INTERFACE,
1298                                                 "Release");
1299         if (message == NULL)
1300                 return;
1301
1302         dbus_message_set_no_reply(message, TRUE);
1303
1304         g_dbus_send_message(connection, message);
1305 }
1306
1307 static int session_disconnect(struct connman_session *session)
1308 {
1309         DBG("session %p, %s", session, session->owner);
1310
1311         if (session->notify_watch > 0)
1312                 g_dbus_remove_watch(connection, session->notify_watch);
1313
1314         g_dbus_unregister_interface(connection, session->session_path,
1315                                                 CONNMAN_SESSION_INTERFACE);
1316
1317         deselect_and_disconnect(session,
1318                                 CONNMAN_SESSION_REASON_DISCONNECT);
1319
1320         g_hash_table_remove(session_hash, session->session_path);
1321
1322         return 0;
1323 }
1324
1325 static void owner_disconnect(DBusConnection *conn, void *user_data)
1326 {
1327         struct connman_session *session = user_data;
1328
1329         DBG("session %p, %s died", session, session->owner);
1330
1331         session_disconnect(session);
1332 }
1333
1334 static DBusMessage *destroy_session(DBusConnection *conn,
1335                                         DBusMessage *msg, void *user_data)
1336 {
1337         struct connman_session *session = user_data;
1338
1339         DBG("session %p", session);
1340
1341         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
1342 }
1343
1344 static GDBusMethodTable session_methods[] = {
1345         { "Destroy",    "",   "", destroy_session    },
1346         { "Connect",    "",   "", connect_session    },
1347         { "Disconnect", "",   "", disconnect_session },
1348         { "Change",     "sv", "", change_session     },
1349         { },
1350 };
1351
1352 int __connman_session_create(DBusMessage *msg)
1353 {
1354         const char *owner, *notify_path;
1355         char *session_path = NULL;
1356         DBusMessageIter iter, array;
1357         struct connman_session *session = NULL;
1358         struct session_info *info, *info_last;
1359
1360         connman_bool_t priority = FALSE, avoid_handover = FALSE;
1361         connman_bool_t stay_connected = FALSE, ecall = FALSE;
1362         enum connman_session_roaming_policy roaming_policy =
1363                                 CONNMAN_SESSION_ROAMING_POLICY_FORBIDDEN;
1364         GSList *allowed_bearers = NULL;
1365         unsigned int periodic_connect = 0;
1366         unsigned int idle_timeout = 0;
1367
1368         int err;
1369
1370         owner = dbus_message_get_sender(msg);
1371
1372         DBG("owner %s", owner);
1373
1374         if (ecall_info != NULL) {
1375                 /*
1376                  * If there is an emergency call already going on,
1377                  * ignore session creation attempt
1378                  */
1379                 err = -EBUSY;
1380                 goto err;
1381         }
1382
1383         dbus_message_iter_init(msg, &iter);
1384         dbus_message_iter_recurse(&iter, &array);
1385
1386         while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
1387                 DBusMessageIter entry, value;
1388                 const char *key, *val;
1389
1390                 dbus_message_iter_recurse(&array, &entry);
1391                 dbus_message_iter_get_basic(&entry, &key);
1392
1393                 dbus_message_iter_next(&entry);
1394                 dbus_message_iter_recurse(&entry, &value);
1395
1396                 switch (dbus_message_iter_get_arg_type(&value)) {
1397                 case DBUS_TYPE_ARRAY:
1398                         if (g_str_equal(key, "AllowedBearers") == TRUE) {
1399                                 allowed_bearers =
1400                                         session_parse_allowed_bearers(&value);
1401                         } else {
1402                                 return -EINVAL;
1403                         }
1404                         break;
1405                 case DBUS_TYPE_BOOLEAN:
1406                         if (g_str_equal(key, "Priority") == TRUE) {
1407                                 dbus_message_iter_get_basic(&value,
1408                                                         &priority);
1409                         } else if (g_str_equal(key, "AvoidHandover") == TRUE) {
1410                                 dbus_message_iter_get_basic(&value,
1411                                                         &avoid_handover);
1412                         } else if (g_str_equal(key, "StayConnected") == TRUE) {
1413                                 dbus_message_iter_get_basic(&value,
1414                                                         &stay_connected);
1415                         } else if (g_str_equal(key, "EmergencyCall") == TRUE) {
1416                                 dbus_message_iter_get_basic(&value,
1417                                                         &ecall);
1418                         } else {
1419                                 return -EINVAL;
1420                         }
1421                         break;
1422                 case DBUS_TYPE_UINT32:
1423                         if (g_str_equal(key, "PeriodicConnect") == TRUE) {
1424                                 dbus_message_iter_get_basic(&value,
1425                                                         &periodic_connect);
1426                         } else if (g_str_equal(key, "IdleTimeout") == TRUE) {
1427                                 dbus_message_iter_get_basic(&value,
1428                                                         &idle_timeout);
1429                         } else {
1430                                 return -EINVAL;
1431                         }
1432                         break;
1433                 case DBUS_TYPE_STRING:
1434                         if (g_str_equal(key, "RoamingPolicy") == TRUE) {
1435                                 dbus_message_iter_get_basic(&value, &val);
1436                                 roaming_policy = string2roamingpolicy(val);
1437                         } else {
1438                                 return -EINVAL;
1439                         }
1440                 }
1441                 dbus_message_iter_next(&array);
1442         }
1443
1444         dbus_message_iter_next(&iter);
1445         dbus_message_iter_get_basic(&iter, &notify_path);
1446
1447         if (notify_path == NULL) {
1448                 err = -EINVAL;
1449                 goto err;
1450         }
1451
1452         session_path = g_strdup_printf("/sessions%s", notify_path);
1453         if (session_path == NULL) {
1454                 err = -ENOMEM;
1455                 goto err;
1456         }
1457
1458         session = g_hash_table_lookup(session_hash, session_path);
1459         if (session != NULL) {
1460                 session = NULL;
1461                 err = -EEXIST;
1462                 goto err;
1463         }
1464
1465         session = g_try_new0(struct connman_session, 1);
1466         if (session == NULL) {
1467                 err = -ENOMEM;
1468                 goto err;
1469         }
1470
1471         session->info = g_try_new0(struct session_info, 1);
1472         if (session->info == NULL) {
1473                 err = -ENOMEM;
1474                 goto err;
1475         }
1476
1477         session->info_last = g_try_new0(struct session_info, 1);
1478         if (session->info_last == NULL) {
1479                 err = -ENOMEM;
1480                 goto err;
1481         }
1482
1483         info = session->info;
1484         info_last = session->info_last;
1485
1486         session->owner = g_strdup(owner);
1487         session->session_path = session_path;
1488         session->notify_path = g_strdup(notify_path);
1489         session->notify_watch =
1490                 g_dbus_add_disconnect_watch(connection, session->owner,
1491                                         owner_disconnect, session, NULL);
1492
1493         info->online = FALSE;
1494         info->priority = priority;
1495         info->avoid_handover = avoid_handover;
1496         info->stay_connected = stay_connected;
1497         info->periodic_connect = periodic_connect;
1498         info->idle_timeout = idle_timeout;
1499         info->ecall = ecall;
1500         info->roaming_policy = roaming_policy;
1501         info->entry = NULL;
1502         info->marker = 0;
1503
1504         if (allowed_bearers == NULL) {
1505                 info->allowed_bearers =
1506                                 session_allowed_bearers_any();
1507
1508                 if (info->allowed_bearers == NULL) {
1509                         err = -ENOMEM;
1510                         goto err;
1511                 }
1512         } else {
1513                 info->allowed_bearers = allowed_bearers;
1514         }
1515
1516         g_hash_table_replace(session_hash, session->session_path, session);
1517
1518         DBG("add %s", session->session_path);
1519
1520         if (g_dbus_register_interface(connection, session->session_path,
1521                                         CONNMAN_SESSION_INTERFACE,
1522                                         session_methods, NULL,
1523                                         NULL, session, NULL) == FALSE) {
1524                 connman_error("Failed to register %s", session->session_path);
1525                 g_hash_table_remove(session_hash, session->session_path);
1526                 session = NULL;
1527
1528                 err = -EINVAL;
1529                 goto err;
1530         }
1531
1532         g_dbus_send_reply(connection, msg,
1533                                 DBUS_TYPE_OBJECT_PATH, &session->session_path,
1534                                 DBUS_TYPE_INVALID);
1535
1536
1537         populate_service_list(session);
1538         if (info->ecall == TRUE) {
1539                 ecall_info = info;
1540                 update_ecall_sessions(session);
1541         }
1542
1543         info_last->online = info->online;
1544         info_last->priority = info->priority;
1545         info_last->avoid_handover = info->avoid_handover;
1546         info_last->stay_connected = info->stay_connected;
1547         info_last->periodic_connect = info->periodic_connect;
1548         info_last->idle_timeout = info->idle_timeout;
1549         info_last->ecall = info->ecall;
1550         info_last->roaming_policy = info->roaming_policy;
1551         info_last->entry = info->entry;
1552         info_last->marker = info->marker;
1553         info_last->allowed_bearers = info->allowed_bearers;
1554
1555         session->info_dirty = TRUE;
1556         session->append_all = TRUE;
1557
1558         session_changed(session, CONNMAN_SESSION_TRIGGER_SETTING);
1559
1560         return 0;
1561
1562 err:
1563         connman_error("Failed to create session");
1564
1565         if (session != NULL) {
1566                 if (session->info_last != NULL)
1567                         g_free(session->info_last);
1568                 if (session->info != NULL)
1569                         g_free(session->info);
1570                 g_free(session);
1571         }
1572
1573         g_free(session_path);
1574
1575         g_slist_foreach(allowed_bearers, cleanup_bearer_info, NULL);
1576         g_slist_free(allowed_bearers);
1577
1578         return err;
1579 }
1580
1581 int __connman_session_destroy(DBusMessage *msg)
1582 {
1583         const char *owner, *session_path;
1584         struct connman_session *session;
1585
1586         owner = dbus_message_get_sender(msg);
1587
1588         DBG("owner %s", owner);
1589
1590         dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &session_path,
1591                                                         DBUS_TYPE_INVALID);
1592         if (session_path == NULL)
1593                 return -EINVAL;
1594
1595         session = g_hash_table_lookup(session_hash, session_path);
1596         if (session == NULL)
1597                 return -EINVAL;
1598
1599         if (g_strcmp0(owner, session->owner) != 0)
1600                 return -EACCES;
1601
1602         session_disconnect(session);
1603
1604         return 0;
1605 }
1606
1607 connman_bool_t __connman_session_mode()
1608 {
1609         return sessionmode;
1610 }
1611
1612 void __connman_session_set_mode(connman_bool_t enable)
1613 {
1614         DBG("enable %d", enable);
1615
1616         sessionmode = enable;
1617
1618         if (sessionmode == TRUE)
1619                 __connman_service_disconnect_all();
1620 }
1621
1622 static void service_add(struct connman_service *service,
1623                         const char *name)
1624 {
1625         GHashTableIter iter;
1626         GSequenceIter *iter_service_list;
1627         gpointer key, value;
1628         struct connman_session *session;
1629         struct service_entry *entry;
1630
1631         DBG("service %p", service);
1632
1633         g_hash_table_iter_init(&iter, session_hash);
1634
1635         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1636                 session = value;
1637
1638                 if (service_match(session, service) == FALSE)
1639                         continue;
1640
1641                 entry = create_service_entry(service, name,
1642                                                 CONNMAN_SERVICE_STATE_IDLE);
1643                 if (entry == NULL)
1644                         continue;
1645
1646                 iter_service_list =
1647                         g_sequence_insert_sorted(session->service_list,
1648                                                         entry, sort_services,
1649                                                         session);
1650
1651                 g_hash_table_replace(session->service_hash, service,
1652                                         iter_service_list);
1653
1654                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1655         }
1656 }
1657
1658 static void service_remove(struct connman_service *service)
1659 {
1660
1661         GHashTableIter iter;
1662         gpointer key, value;
1663         struct connman_session *session;
1664         struct session_info *info;
1665
1666         DBG("service %p", service);
1667
1668         g_hash_table_iter_init(&iter, session_hash);
1669
1670         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1671                 GSequenceIter *iter;
1672                 session = value;
1673                 info = session->info;
1674
1675                 iter = g_hash_table_lookup(session->service_hash, service);
1676                 if (iter == NULL)
1677                         continue;
1678
1679                 g_sequence_remove(iter);
1680
1681                 if (info->entry != NULL && info->entry->service == service)
1682                         info->entry = NULL;
1683                 session_changed(session, CONNMAN_SESSION_TRIGGER_SERVICE);
1684         }
1685 }
1686
1687 static void service_state_changed(struct connman_service *service,
1688                                         enum connman_service_state state)
1689 {
1690         GHashTableIter iter;
1691         gpointer key, value;
1692
1693         DBG("service %p state %d", service, state);
1694
1695         g_hash_table_iter_init(&iter, session_hash);
1696
1697         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1698                 struct connman_session *session = value;
1699                 GSequenceIter *service_iter;
1700
1701                 service_iter = g_hash_table_lookup(session->service_hash, service);
1702                 if (service_iter != NULL) {
1703                         struct service_entry *entry;
1704
1705                         entry = g_sequence_get(service_iter);
1706                         entry->state = state;
1707                 }
1708
1709                 session_changed(session,
1710                                 CONNMAN_SESSION_TRIGGER_SERVICE);
1711         }
1712 }
1713
1714 static void ipconfig_changed(struct connman_service *service,
1715                                 struct connman_ipconfig *ipconfig)
1716 {
1717         GHashTableIter iter;
1718         gpointer key, value;
1719         struct connman_session *session;
1720         struct session_info *info;
1721         enum connman_ipconfig_type type;
1722
1723         DBG("service %p ipconfig %p", service, ipconfig);
1724
1725         type = __connman_ipconfig_get_config_type(ipconfig);
1726
1727         g_hash_table_iter_init(&iter, session_hash);
1728
1729         while (g_hash_table_iter_next(&iter, &key, &value) == TRUE) {
1730                 session = value;
1731                 info = session->info;
1732
1733                 if (info->entry != NULL && info->entry->service == service) {
1734                         if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
1735                                 ipconfig_ipv4_changed(session);
1736                         else if (type == CONNMAN_IPCONFIG_TYPE_IPV6)
1737                                 ipconfig_ipv6_changed(session);
1738                 }
1739         }
1740 }
1741
1742 static struct connman_notifier session_notifier = {
1743         .name                   = "session",
1744         .service_add            = service_add,
1745         .service_remove         = service_remove,
1746         .service_state_changed  = service_state_changed,
1747         .ipconfig_changed       = ipconfig_changed,
1748 };
1749
1750 int __connman_session_init(void)
1751 {
1752         int err;
1753
1754         DBG("");
1755
1756         connection = connman_dbus_get_connection();
1757         if (connection == NULL)
1758                 return -1;
1759
1760         err = connman_notifier_register(&session_notifier);
1761         if (err < 0) {
1762                 dbus_connection_unref(connection);
1763                 return err;
1764         }
1765
1766         session_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
1767                                                 NULL, cleanup_session);
1768
1769         sessionmode = FALSE;
1770         return 0;
1771 }
1772
1773 void __connman_session_cleanup(void)
1774 {
1775         DBG("");
1776
1777         if (connection == NULL)
1778                 return;
1779
1780         connman_notifier_unregister(&session_notifier);
1781
1782         g_hash_table_foreach(session_hash, release_session, NULL);
1783         g_hash_table_destroy(session_hash);
1784         session_hash = NULL;
1785
1786         dbus_connection_unref(connection);
1787 }